Alarm system tester



FIG. 1 is a top front perspective view of an alarm system tester showing our new design, with the cover in an open position;

FIG. 2 is a bottom and left rear perspective view thereof with the cover closed;

FIG. 3 is a top plan view thereof, with the cover closed;

FIG. 4 is a rear elevational view thereof, with the cover closed;

FIG. 5 is a left side elevational view thereof with the cover closed. 

The ornamental design for alarm system tester, as shown and described. 